2157974116 has 9 divisors (see below), whose sum is σ = 3776617299. Its totient is φ = 1078940604.

The previous prime is 2157974053. The next prime is 2157974131. The reversal of 2157974116 is 6114797512.

It is a happy number.

The square root of 2157974116 is 46454.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 81295 + ... + 104521.

Almost surely, 2^2157974116 is an apocalyptic number.

2157974116 is the 46454-th square number.

It is an amenable number.

2157974116 is a deficient number, since it is larger than the sum of its proper divisors (1618643183).

2157974116 is an frugal number, since it uses more digits than its factorization.

2157974116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46458 (or 23229 counting only the distinct ones).

The product of its digits is 105840, while the sum is 43.

The cubic root of 2157974116 is about 1292.2565547578.

The spelling of 2157974116 in words is "two billion, one hundred fifty-seven million, nine hundred seventy-four thousand, one hundred sixteen".